Experimental and Numerical investigation of Short Concrete Columns Reinforced with BFRP bars under Concentric Loading

Abstract

Fiber-reinforced polymer (FRP) bars are being examined as a feasible alternative to solve the problem of corrosion in reinforced concrete infrastructure due to their non-corrosive nature. Numerous experimental investigations have been conducted to assess the role of fiber-reinforced polymer bars in concrete columns. Current guidelines have not included the significant insights offered by these investigations, therefore they either ignore or assess the role of FRP bars in compression conservatively. Basalt fiber-reinforced polymer (BFRP) bars have recently emerged as a viable substitute for Glass fiber-reinforced polymer (GFRP) bars and Carbon fiber-reinforced polymer (CFRP) bars since they have higher tensile strength than GFRP and a cheaper cost than CFRP. Because there has been little study on BFRP, it has not been included in the design recommendations. Consequently, the purpose of this work is to quantify the contribution of BFRP bars to the load-carrying capacity of compression members by an experimental and numerical investigation. The longitudinal reinforcement ratio and rebar material are variables in this study. It is found that BFRP bars contribute 15%, which is 32% less than that of steel bars. As the longitudinal reinforcement ratio increases, so does the contribution of BFRP bars. The load-carrying capacities predicted by design equations and numerical models are found to be in good agreement with the experimental results. In conclusion, this study establishes that Basalt Fiber-Reinforced Polymer (BFRP) bars exhibit considerable contribution in compression members.